Electric-lighting system.



L; R, JB-W-BTT, ELEOTRIGLIGHTING SYSTEM. APPLICATION IILED JULY 5, 19 13Pgteptgd Sept. 15, 1914 mums-SHEET 1. v

following is a specification.

Fig. 3

i 2 and 3, 10 represents trolling the electric LEROY R;J'IEPW'lEl'JPllI, OF LYNN, MASSACHUSETTS.

ELECTRIC-LIGHTING SYSTEM.

i Specification of Letters Patent.

Patented Sept. 15, 1914.

Application filed July 5, 1913. Serial No. 777,388.

To all whom it may concern: 1 Be it known that I, LEROY It. Jnwn'rnofLynn, in. the county of Essex and State of Massachusetts, have inventedanew and useful Electric-Lighting System, of whicln the My inventionrelates to the use of electricity for lighting gas by which term I meanany suitable combustible material such as the ordinary gas as well asgasolene or other suitable combustible 'material.

invention resides chiefly in providing a valve which is moved beyondfull open position in order to light the gas the valve being returned tofull open position for normal use, thus making sure that there will besuflicient gas-to time avoiding the necessity of making the circuit whenthe gas is shut oif.

A feature of my invention consists inconcircuit entirely by the gasvalve and other features will" be pointed out below.

In the drawings: Figure 1 is a plan view of a gas stove embodying myinvention; Fig. 2 is a section on line 2-2 of Fig. 1 is a diagrammaticview showing the electrical connections; Fig. showing a modification ofthe gas regulating device; Figs. 5 and 6 are modifications; and Figs. 7and 8 are details hereinafter described.

Having reference particularly to Figs. 1, the top of a gas stove and 11the three burners thereof which are connected by branch pipes 12 withthe usual .main gas supply pipe 13. The supply me 13 is supported bybrackets 14 fastened to top 10-while each branch 12 is made with a pairof upwardly projecting arms 15 fastened to the under side of top 10.Each branch 12 is also made with a valve chamber 16 within which ismounted a valve 17 that is provided with a stem 18 and handle 191. Eachvalve stem 18 is provided with a radially projecting pin 19 codperatingwith a flexible spring contact 20 and a rigid abutment or stop contact21, said contacts 20 and 21, being secured to a depending block 22 ofinsulating material fastened in any suitable manner to. the stove top10. -The outer face of contact 20 has a plate 23 of insulating materialsecured to it against which in 19 strikes when valve 17 is rotated so belighted and at the same.

4 is a detail.

i Through each block 22 extends one end 10f an electrode 24: whose outerend projects slightly beyond the outer face of block 22 land occupies aposition in the path of the }free end of contact 20. From block'20 theielectrode 2 1 extends inward througha supiport 25 consisting of a blockof insulating imaterial strapped to branch 12, and the {,mner end ofsaid electrodeis bent downbut'out of contact with the latter so as toEleave a spark gap between the two.

I To the rear side of top 10 is secured a ,block 26 of insulatingmaterial upon which are mounted three binding posts 27, 28 and @29, thebinding post 27 being connected in -multiple with stop contacts 21 bywires 30 as shown in Fig. 3 and the binding post 28 being connected inmultiple with the spring contacts 20 by wires 31.

The binding post 29 is grounded on top 10 through a conductor 32 andalso connected-through wires 33 with the'ends of the two windings of aninduction coil 34. The opposite end of the primary of coil 34 isconnected by a wire 35 with one pole of a battery 36 whose opposite poleis connected by a wire 37 with binding post 27. The opposite end of'thesecondary of coil 3 1 is connected by a wire 38 with binding post 28.

When the handles 191 of valves 17 are at right angles with the branches12 the gas is completely shut oif from branches 12 and burners 11 butwhen either of said handles .is swung outward ninety degrees into theposition indicated, for example, at m, Fig. 1, then the valve 17connected therewith is fully open. These features of valve operation arecommon with valves of thistype ther description. Heretofore, however, ithas been the practice to provide stops to limit the opening andclosingmovements of the valve to just ninety degrees. In accordance withthe present invention, however, I have substituted the stop contacts 21for the stops heretofore provided to limit the opening movement of thevalve and each of these stop contacts 21 is positioned relatively to itsvalve so as to allow the latter more movement .than is necessary to openthe valve with the result that when handle 19 is swung from its fullyclosed position to the limitpermitted by stop contact 21, its valve 17is first fully opened as its handle reaches the @ward into closeproximity to the burner 11 and will be readily understood without furvposition a? and then partially closed as its not only are both theprimary and secondary closed at 1921 andj2024, respectively, 1

through the operation of a single control member 19, but these twocircuits are closed simultaneously thereby causing a spark to beproduced at the gap in the secondary C11- cuit which exists between theend of electrode 24 and its burner 11.

The wires connecting binding osts27 and 28 with contacts 20 and 21 may emounted upon the under side of top 10 and protected from heat in anysuitable manner.

In Fig. 4 I have shown a modification wherein only one contact, 21, isused. In this case two inwardly projecting posts 39 and 40 are mountedon block 22 and the inner ends of these posts are connected by a wireorfilament 41 of platinum or the like which is supported immediately ab veone or more of'the outlet openings of the burner 11. The post 40 andvalve 17 are connected by wires 42 and 43 with a source of electricalsupply. When valve 17 of Fig. 4 is swung from its closed position it ismoved beyond its, fully open position and partially closed before itspin 19 engages the stop contact 44.

When pin 19 engages sto contact 44 a circuit is completed througfilament 41 and the latter is made incandescent and acts to ignite thegas escaping from the burner.

, In Fig. 5 one end of the secondary winding of the induction coil 34 isconnected to a switch arm 45 by a wire 46 and this switch arm is adaptedto be moved over a series of contact points 47 that are connected bywires 48 with the electrodes 24 mounted on but 1' insulated from thestove frame. The other end of the secondary winding is grounded on thestove frame 10 through a connection 49. One end of the primary isconnected by a wire 50 with one pole of a battery 51 whose opposite poleis connected through wires 52 with contacts 2O mounted on but insulatedfrom the stove frame. The contacts 20 co6perate with fixed contacts 2f)mounted on and electrically connected with stove body 10. The other endofthe primary" of coil 34 is grounded on stove body 10.

through a wire 53 and wire 49 so that when either contact 20 is closedthe primary of coil 34 is completed through contacts 2O" and 20 and thestove body 10. When it is de- .throttled then' the operator swings thevalve into its the arm 45 is placed on the point correspond ing to thatparticular burner to close the secondary thereof, and the handle 19 ofthe proper valve is turned to admit gas to the burner and close therimary. The current induced in the secon ary winding causes a sparkto beproduced between electrodes 24* and the burner which ignites thepartially gas escaping from the burner, and

fullyopen position which not only gives a full supply of gas but alsoopens the primary at 20Q0. I

By lighting the gas while it is partially throttled as described insteadof while being supplied full force as heretofore, ex-

plosions are prevented. As will be clear, the

gas canbe shut off t any time without again operating the circuits.

'In the diagrammatic view, Fig. 6, I have shown a construction for usewith the ordinary electric light current which is usually an alternatingcurrent of 110 volts. In this form I use a step down transformer 51which may induce the current. v

In the detail views of Figs. 7 and'8, Fig. 8 being a section on line 8-8of Fig. 7 valve 17 at its lower end is provided with a downwardlyextending threaded stud 54 on which is mounted a washer 55 made withalaterally extending finger 55. This washer is keyed to stud 54 by a pin58 so that the valve and washer turn together while a nut 56 on stud 54holdswasher 55 in place and valve 17 within its chamber. Onthe underside of supply pipe 13 is fastened a plurality of leaf springs 57 onefor each valve 17 and the free end of each spring.57 occupies a positionin the path of the finger' 55 of one of the washers 55. When either ofthe valves 17 occupies its closed position its finger 55 is angularlyseparated from its spring 57. a

so that when the operator merely releases handle 191 of valve 17 thespring 57 acting through finger 55 automatically shifts the valvebackward but only far enough tocarry it into its fully open position.

What I claim is:

1. An electric lighting system for gas comprising a burner; anelectrical circuit to convey electricity in adjacency to said burner tolight the gas; and a valve to controlthe flow of gas to said burner,which valve, whenmoved beyond the full open position for the flow of gasto said burner,

.makes said circuit.

2. An, electric lighting system for gas comprising a burner; anelectrical circuit including an induction coil for conveying electricityin adjacency to said burner to light the gas; and a valve to control theflow of gas to said burner, which valve, when i I moved beyond the fullopen position for the flow of gas to-said burner, makes the circuitthrough the primary of'said coil and also .makes'the circuitthrough thesecondary of said coil. 4

3. An electric lighting system for gas comprisinga burner; an electrical.circuit including an induction coil for conveying electricity inadjacency vto said burner to light the gas; 'and a valve to control theflow of gas to said burner, which valve, when moved beyond the full openposition for the flow of gas to said burner, makes the circuit throughtheprim'ary of said coil and also I makes the circuit through thesecondary of said coil, one terminal acting as a stop to limit themovement of said valve in one direction. Y

4. An electriclighting system for gas comprising a burner; "anelectrical circuit to convey electricity in adjacency to said burner tolight the gas; a valve to control the flowpf gas to said burner, whichvalve, when moved beyond the full open position for the flow of gas tosaid burner, makes said circuit; and automatic means to return saidvalve to full open position.

5. An' electric lighting system for gas comprisinga burner; anelectrical circuit to convey electricity in adjacency to said burner tolight the as; a valve to control the flow of gas to sald burner, whichvalve, when moved beyond the full-open position for the flow of gas tosaid burner, makes;

said circuit; and a spring to return said valve to full operi position.-

6. An electric lighting system for gas comprising a burner; an'electrical circuit including aninduction coil for conveying electricityin adjacency to said burner tolight the gas; and a valve to control theflow of gas to said burner, which valve, when moved beyond the full'open position for the flow of gas to said burner, makes the circuitthrough theprimary of said coil and also .simultaneously makes thecircuit through the secondary of said coils 7. An electric lightingsystem I for gas comprising a burner; an electrlcal clrcuit including aninductlon coil forfconfveyi'ng electricity in adjacency to said burnerto "the bridging member of saidcircuit.

light the gas; a valve to control the flow of gas to said burner, whichvalve, when moved beyond the full open positionfor the flow of gas tosaid burner, makes the circuit through the primary of said coil and alsosimultaneously makes the circuit through the secondary of said coil, oneterminal acting as a stop to limitthe movement of said valve in onedirection; and a spring to return the valve to full open position.

8. An electric lighting system for gas comprising a stove;- a burnermounted on the stove; an electrical circuit in which is included aportion of said stove to convey electricity in adjacency to said burnerto light the gas; and a valve mounted on the stove to control the flowof gas to said burner, which valve, when beyond the full open positionfor the flow of gas to said burner, makes said circuit.

9. An electric lighting system for gas comprising a burner; anelectrical circuit to convey electricity in adjacency to said burnertolight the gas; and a valve to control the flow of gas'to said burner,which induction coil and including said stove for conveying electricityin adjacency to said burnerto light the gas; and a valve to con-.

trol the flow of gas to said burner; which valve, when moved beyond'thefull open positi'onffor the flow. of gas, to said burner,

maiiesth'e circuit through the primary of saidcoil' and. also makes thecircuit through the'seoondary of said coil,"said {valve beingthe'bri-dgin'g member of the primary of said 7 Eiior R.--JEWETT.

Witnesses: v i I GEORGEA'. ROCKWELL, ALExANpnR L. PELKEY.

